244 TJNeULATA. 



Anthracotherium, sp. b. 

 Hab. India. 



15712. Fragment of the right ramus of the mandible, containing i^Tl, 

 m- 2, and the alveolus of pm. 4 ; from the Pliocene of the 

 Siwalik Hills, India. The length of ^Tl is 0,016, and that 

 of mT2, 0,019. The specimen is much smaller than the 

 mandible referred to A. hyopotamoides, and considerably 

 larger than that referred to A. silistrense. The teeth agree 

 very nearly in size with those of the mandible from the 

 Isle of Wight (No. 29803) provisionally referred to A. 

 minus, but the form of the columns is different. 



Cautley Collection. Presented, 1842. 



Anthracotherium, sp. c. 

 Hab. India. 



19042. The third left lower true molar ; from the Pliocene of the 

 Siwalik Hills, India. This specimen is relatively smaller 

 than the teeth of the preceding specimen ; and is larger 

 than m . 3 of A. silistrense (No. M. 1543), its length being 

 0,027 instead of 0,023. 



Cautley Collection. Presented, 1842. 



Anthracotherium gresslyi (H. von Meyer '). 



Syn. Tapinodon gresslyi, Meyer 2 . 



Hyopotamus gresslyi, Riitimeyer 3 . 



This species has been referred to the present genus by the writer 

 in the ' Geological Magazine,' dec. 3, vol. ii. p. 69 (1885). It is the 

 smallest described form ; and differs from the other species of which 

 the complete dentition is known by the long diastema between the 

 first and second upper premolars, and by the absence of the first 

 lower premolar. It must be regarded as a highly specialized form 

 of the genus, presenting the same relation to the typical forms as is 

 borne by Ccenotherium cadurcense and its allies to Ccenotherium com- 

 mune, and by Xiphodon secundarius to Xiphodon gracilis. The 

 type specimens are from the siderolithes (Upper Eocene) of Eger- 

 kingen, Switzerland. 



Hab. Europe. 



1 Neues Jahrb. 1846, p. 471, Tapinodon. 2 Loo. tit. 



s Denkschr. schw. Ges. Nat. vol. xix. art. 3, p. 70 (1862). 



